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Tsinghua Science and Technology 2015, 20(2): 142-154 https://doi.org/10.1109/TST.2015.7085627
Open Access | Issue | Published: 23 April 2015

Preventing False Trips of Zone 3 Protection Relays in Smart Grid

Show Author's Information Jiapeng Zhang,  Yingfei Dong( )
Department of Electrical Engineering, University of Hawaii, Honolulu, HI 96822, USA
Keywords:
smart grid, zone 3 relay, cascading failure, real-time communications
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Zhang J, Dong Y. Preventing False Trips of Zone 3 Protection Relays in Smart Grid. Tsinghua Science and Technology, 2015, 20(2): 142-154. https://doi.org/10.1109/TST.2015.7085627
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Abstract Full text About this article

While remote zone 3 protection relays are essential to power systems, their false trips are also one of main causes related to cascading blackouts. Although many methods have been developed on traditional power systems to address this issue, the past cascading failure events showed the ineffectiveness of these methods. With the development of Smart Grid (SG), new agent-based methods have been proposed to address this issue by utilizing SG real-time communications. We found that these solutions simply assume ideal communication networks and do not consider the effect of practical network constraints and resource management. In this paper, we propose several solutions to address practical network resource management and constraints, and further improve the agent-based solutions in order to prevent the false tripping of zone 3 relays in various conditions. We also analyze the potential issues of these solutions, and point out the future investigation in this direction.


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Preventing False Trips of Zone 3 Protection Relays in Smart Grid

Show Author's information Jiapeng Zhang, Yingfei Dong( )
Department of Electrical Engineering, University of Hawaii, Honolulu, HI 96822, USA

Abstract

While remote zone 3 protection relays are essential to power systems, their false trips are also one of main causes related to cascading blackouts. Although many methods have been developed on traditional power systems to address this issue, the past cascading failure events showed the ineffectiveness of these methods. With the development of Smart Grid (SG), new agent-based methods have been proposed to address this issue by utilizing SG real-time communications. We found that these solutions simply assume ideal communication networks and do not consider the effect of practical network constraints and resource management. In this paper, we propose several solutions to address practical network resource management and constraints, and further improve the agent-based solutions in order to prevent the false tripping of zone 3 relays in various conditions. We also analyze the potential issues of these solutions, and point out the future investigation in this direction.

Keywords: smart grid, zone 3 relay, cascading failure, real-time communications

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Received: 26 January 2015
Revised: 14 March 2015
Accepted: 18 March 2015
Published: 23 April 2015
Issue date: April 2015

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